Anderson, an 85-Year-Old Female, Was Admitted to the Unit with a Diagnosis

Anderson, an 85-year-old female, was admitted to the unit with a diagnosis of pneumonia. On routine assessment, the nurse observes that the client is demonstrating signs of difficulty breathing. Mrs. Anderson is also complaining of difficulty expelling her secretions. Auscultation of the lung fields reveals bronchial sounds in the left lower lobe. Which of the following nursing interventions is provided to the client first?

A) Instruct bed rest.
B) Administer oxygen.
C) Increase fluid intake per hour.
D) Administer antibiotics.